Tag device in wireless communication system, electronic device, communication method, and storage medium
A method for estimating channel parameters includes: sending a paging signal for identifying the tag device; sending training sequence information, receiving first training sequence feedback information during a non-working period of the tag device, receiving, during a working period of the tag device, second training sequence feedback information modulated by the tag device, and estimating the channel parameters of the tag device according to the training sequence feedback information and the second training sequence feedback information. The tag device having at least one antenna of the present disclosure can modulate carrier signals to transmit information, has advantages such as a fast transmission rate, a large amount of transmission data and a strong anti-interference capability, and can adapt to different application scenarios.
1. A method of estimating channel parameters of a tag device, comprising:
sending a paging signal identifying the tag device;
sending training sequence information;
receiving first training sequence feedback information during a non-working period of the tag device;
receiving second training sequence feedback information modulated by the tag device, during a working period of the tag device; and
estimating the channel parameters of the tag device according to the first training sequence feedback information and the second training sequence feedback information,
wherein the method further comprises:
prior to sending the paging signal, determining whether or not to send silence signals to tell other devices in an environment to stop sending signals to the tag device,
wherein no silence signal is sent when there is only one signal source in the environment, and
wherein silence signals are sent when there are a plurality of signal sources in the environment.
2. The method according to claim 1 , wherein environmental interference information is estimated according to the first training sequence feedback information.
3. The method according to claim 1 , further comprising:
communicating with the tag device based on the environmental interference information and the channel parameters of the tag device.
4. The method according to claim 1 , wherein
signals are sent to or received from at least one of a plurality of antennas in the tag device.
5. The method according to claim 4 , wherein
signals are sequentially transmitted to or received from at least one antenna which work in a time division multiplexing manner among the plurality of antennas in the tag device.
6. The method according to claim 1 , wherein
the paging signal is generated by changing a data transmission rate of a data channel, or
the paging signal is generated by puncturing data on a data channel.
7. The method according to claim 1 , wherein
the paging signal is a pseudo-random sequence, a length of which is determined according to the number of the tag devices.
8. The method according to claim 1 , wherein the paging signal comprises an ID of the tag device, and the training sequence is a cellular signal or a pilot sequence.
9. The method according to claim 1 ; further comprising:
communicating with a plurality of tag devices sequentially m a time division multiplexing manner.
10. An electronic device, comprising:
at least one antenna, and
one or more processing circuits configured to:
send a paging signal identifying the tag device;
send training sequence information,
receive first training sequence feedback information during a non-working period of the tag device,
receive second training sequence feedback information modulated by the tag device, during a working period of the tag device; and
estimate channel parameters of the tag device according to the first training sequence feedback information and the second training sequence feedback information,
wherein, prior to sending the paging signal, the one or more processing circuits are configured to determine whether or not to send silence signals to tell other devices in an environment to stop sending signals to the tag device,
wherein no silence signal is sent when there is only one signal source in the environment, and
wherein silence signals are sent when there are a plurality of signal sources in the environment.